4
2. Structure
2.1 Outdoor Unit and Refrigerating System
Refer to the technical manual for the structur diagram and system cycle diagram.
2.2 Tools and Instruments Required for Installation
Check that the designed pressure of the machine is 4.15MPa.
To avoid mixing of refrigerant with cooling oil or other refrigerants in the system, the size of the
connecting device is changed.
Before installation, it is necessary to have the following tools:
No.
Tool
No.
Tool
No.
Tool
No.
Tool
1
Handsaw
6
Pipe Bender
11
Wrench
16
Leveller
2
Screwdriver
7
Vise
12
Charging Cylinder
17
Cutter for Wires
3
Vacuum pump
8
Pipe cutter
13
Manifold valve
18
Hoist (for indoor unit)
4
Charging hose
9
Brazing tools
14
Wire cutter
19
Ammeter
5
Megohmmeter
10
Hex wrench
15
Leakage detector
20
Voltage meter
NOTE:
While touching to refrigerant directly, use special installation tools and instruments for the new refrigerant (R410A).
DANGER
!
The pressure of the new refrigerant R410A is 1.4 times that of the conventional refrigerant. Water,
oxide, grease and other impurities can easily affect the performance of the refrigerant. Ensure that
the moisture, dust, other refrigerants or refrigerating oil in the refrigerating system are removed.
Therefore, if you do not use the specified material and the tool, it may cause an explosion, injury,
refrigerant leak, electrical failure or fire.
